Abstract: The automatic serial testing of the heats of transformation of material samples is accomplished. The samples are enclosed in capsules which are placed into sample carriers on a turntable. A transfer mechanism transfers the capsules from the turntable to a controllably heatable test sample receiver and, after the measurement, back to the turntable. The entire arrangement is located in a housing filled with nitrogen. The sample carriers with the capsules can be inserted into this housing and onto the turntable through an air lock.

Abstract: A method of and apparatus for the non-destructive evaluation of welds joining metal bodies employing infrared thermography; the method comprising the steps of applying thermal energy to a weld and observing temperature differentials that occur on the weld's surface. The apparatus comprises a device for applying thermal energy to welds being inspected; a device for scanning the weld surface for infrared radiation being emitted therefrom; a device for capturing the emitted radiation and converting it to a signal representative of the thermophysical characteristics of the weld; and a device for visually displaying the signal in a form suitable for interpretation.

Abstract: Method and apparatus are provided for simultaneously measuring temperature and pressure in a class of crystalline materials having anisotropic thermal coefficients and having a coefficient of linear compression along the crystalline c-axis substantially the same as those perpendicular thereto. Temperature is determined by monitoring the fluorescence half life of a probe of such crystalline material, e.g., ruby. Pressure is determined by monitoring at least one other fluorescent property of the probe that depends on pressure and/or temperature, e.g., absolute fluorescent intensity or frequency shifts of fluorescent emission lines.

Abstract: The specification discloses a boundary detector for locating the boundary between two substances having different thermal absorption characteristics. In one embodiment, the detector monitors the level of a coolant in a vessel in which case the upper surface of the coolant constitutes the detected boundary. An elongate sensor is constructed of a plurality of segments of different material connected end-to-end to form a series of thermocouple junctions. This sensor is disposed across the boundary in the two substances, and a segmented heater cable is used to heat selected ones of the thermocouple junctions. The sensor and the heater cable are electrically insulated by thermally conductive material that will transfer heat to the substances in which the sensor is disposed, and because of this heat transfer, the temperatures of the heated junctions are, in part, dependent upon the substance in which it is located. By monitoring the voltage potential across the sensor, the boundary may be detected and located.

Abstract: A thermometer adapted for immersion in a liquid includes a monolithic casing matrix. A plurality of liquid crystal display portions are embedded in the casing matrix. The liquid crystal display portions each have a liquid crystal agent with an optically perceivable condition at a temperature or temperature range. Indicia of the temperature or temperature ranges can also be provided.

Abstract: An electrical clinical thermometer comprises a thermometer for measuring a temperature value, a storage device for storing the previous temperature value, a detection device for detecting whether the previous temperature value is present, a display responsive to the detection device for displaying the previous temperature value if measured, or otherwise displaying that the previous temperature value was not measured, and a control device responsive to the thermometer for controlling the display to display the current temperature value in place of the previous temperature value in the case where the current temperature value is measured by the thermometer.

Abstract: A registry device for transparencies for an overhead projector comprises a backbone with at least two projections for entering openings in a transparency to prevent it from moving; and, an adhesive-free anchoring sheet of plastic attached to the backbone. The anchoring sheet being of a material that will cling to the glass stage of a projector and prevent the registry device from sliding or being moved until the anchoring sheet is lifted from the glass. In a preferred embodiment a framing sheet also is attached to the backbone.

Abstract: The present invention is a control range display for an electronic thermostat. A plurality of individually actuable display segments are disposed in a line. Each of these display segments represents a particular temperature. The control range of the electronic thermostat is displayed by actuating the display segments representing the upper and lower preselected temperatures and all display segments therebetween. In the preferred embodiment each of these display segments is a liquid crystal display device. The preferred embodiment enables indication of the present temperature by actuation of a single display segment representing that temperature upon selection of a normal mode and an indication of the control temperature range by actuating display segments in the manner noted above upon selection of a program mode.

Abstract: A folding slide viewer has a rear projection screen which swings into a ft position for storage. In a second, operating position, the projection screen it is provided with a lightproof bellows. The optical axis of the lens system is inclined at an angle with respect to the horizontal base of the housing. A reflector is along the optical axis of the lens system, when the screen is in its operating position, to reflect an image onto the screen. An image trap is swingable between a first position perpendicular to a longitudinal axis of the slide magazine and a second position perpendicular to the optical axis of the lens system.

Abstract: The process consists in that two comparison tube sections (3; 4), which originate from a single condenser tube and of which one (3) is left in the corroded condition and/or the condition encrusted by mineral deposits and the other (4) is brought into the new condition by etching or other cleaning procedures, are conductively connected in series, and cooling water flows through them and they are heated from the outside in a condenser chamber in each case (1 and 2 respectively) by steam flows of equal power. The temperatures (t.sub.1, t.sub.2 and t.sub.3, t.sub.4 respectively) measured at the inlet and outlet positions of the comparison tube sections (3; 4), the measured values of the mass flow of cooling water (M.sub.w) and the steam temperatures (t.sub.f ; t.sub.b) and the heat flows (Q.sub.kf =Q.sub.kb) in the two condenser chambers (1 and 2 respectively) permit the determination of the thermal resistance (R.sub.

Abstract: This invention relates to a temperature control indicator unit comprising a substrate having supported thereon (a) microcapsules enclosing a hydrophobic organic compound possessing an arbitrarily selected melting point, (b) a methine dye and (c) an oxidizing material. More particularly, a unit made by combining an irreversibly color-developing methine dye and an oxidizing material with microcapsules enclosing a hydrophobic organic compound possessing a predetermined melting point and supporting them on a substrate is used for temperature control purposes. A suitable measure is taken, preferably at or below the desired control temperature, to break at least a part of the microcapsules of the unit and thereby produce fissures or the like in the microcapsule membrane. Then, the unit is stored or transported together with an article to be placed under temperature control.

Abstract: An electronic clinical thermometer including electronic circuitry and a battery housed in an elongate casing having at one end an extended, slender tip provided with a temperature sensing unit covered by a metal cap. The distal end of the slender tip has a plurality of annular ribs around its outer periphery, the annular ribs being covered by the metal cap. The annular ribs and the inner surface of the metal cap define air-filled chambers which prevent liquids from invading the interior of the casing.

Abstract: A mnemonic system for identifying one object out of many substantially like objects. The system includes an elastomeric adhesion device proportioned for placement upon a horizontal surface of the object to be identified. Also included is an elongate resilient linear member having a first end and a second end, the member secured, at the first end to the adhesion element, in a vertical orientation relative to the surface of the object to be identified. Also provided are several resilient uniplanar elements, each of the elements having several holes, each of the holes proportioned to permit the slideable passage of the second end of the linear member through a selected pair of such holes after a bending of the uniplanar element has occurred. Such holes are proportioned to frictionally contact the linear member after the passage of the linear member therethru, thereby maintaining said uniplanar elements in a resiliently deformed co-action with the linear elememt.

Abstract: An excessive pressure differential indicating device for use with a filter in a liquid circulating system. The device has a reciprocable piston that reciprocates between a high pressure location, when the pressure differential is not excessive, and a low pressure location, when the pressure differential is excessive. The device has an indicator button with a magnetically conductive element, and the button is retained in a non-indicating position when the reciprocable piston is at the high pressure location by magnetic attraction between a permanent magnet carried by the reciprocable piston and the magnetically conductive element, a spring being provided to bias the indicator button to an indicating position when the reciprocable piston moves with the permanent magnet away from the indicator button to the low pressure location.

Abstract: In a temperature measurement device, output signals from a temperature measuring sensor having been stored in a recording element are displayed when a judging element detects that a manipulatable switch is closed. Temperature measurement is begun including displaying the temperature when said judging element detects that the switch is opened after it is closed.

Abstract: The flagstaff described herein comprises a hollow flag holding unit or sleeve preferably cylindrical in shape, capped at one end and having a longitudinal slot running at least a substantial portion of the length of the flag holding unit adapted to have a stiff, stitched or raised edge of a flag inserted into the holding unit with the flag extending through the slot with the major portion of the flag extending outside the holding unit. With flag in position the capped holding unit is positioned on a vertical staff with the cap resting on the top end of the staff. The flag edge will be retained in a straight line and the holding unit will rotate as the wind direction changes so that the flag will not wrap around the supporting means.

Abstract: The present invention consists in a rear image projection apparatus having a transmissive screen of high efficiency and low moire disturbance. In particular, the screen comprises a Fresnel sheet having a Fresnel lens, a front sheet having a horizontally-diffusing lenticular lens and a light diffusing element, and if necessary, a third sheet, wherein at least one surface of the Fresnel sheet or the third sheet is formed with a vertically-diffusing lenticular lens, and a pitch of the Fresnel lens is set to be at most 150% of an effective diffusion width of the diffusion element.

Abstract: An electronic thermometer of the present invention includes: a temperature sensor for sensing temperature and outputting a digital signal value representative thereof; a temperature conversion data storage unit having at least a first data storage area for storing temperature conversion data of relatively high resolution and a second data storage area for storing temperature conversion data of relatively low resolution; a read-out element for, when the digital signal produced by the temperature sensor is within a first range, reading-out corresponding temperature conversion data from the first data storage area according to the value of the digital signal, and, when the digital signal, produced by the temperature sensor is within second range, reading out corresponding temperature conversion data from the second data storage area according to a selected value of the digital signal, and a display for displaying a temperature corresponding to the temperature conversion data.

Abstract: An improved pointer and shaft adapter assembly for use in instruments such as the speedometer of a vehicle including an elongated pointer portion and shaft forming portion connected together by engagement between spaced tabs which project from the pointer lying alongside side wall surfaces of an end connector of the shaft adapter. Cooperative nibs and apertures of the pointer and shaft forming portions secure the parts together and prevent any substantial tilting movement therebetween.

Abstract: A fastening device which is of one piece construction of a ferromagnetic material, having in it formed a pair of jaws through which a fastening pin is inserted and tightly engaged from reverse travel due to the inward bias and angle of the jaws, thereby preventing unauthorized removal.Removal of the pin is accomplished when the jaws are spread slightly due to a magnetic force attracting a formed upper end or loop and the resulting motion being transmitted through a riser to integral lever arms which through mechanical advantage flex the base thereby spreading the jaws apart.